Duplex Stainless Steel Non Return Valves

We are India's one of the most trusted brand for Duplex Stainless Steel Non Return Valves, being also known as check valve, clack valve, non-return valve or one-way valve, that normally allows fluid (liquid or gas) to flow through it in only one direction.

We are the leading manufacturers and suppliers of DSS Non Return Valves in India. These Duplex steel valves are fabricated using qualitative DSS raw material.. Our manufactured Non return valves are rich in quality and find a wide application in many diversified sections of the industry. These valves allow various type of liquids and gases to flow in one direction and block the other. These dupex steel valves are exclusively used in various chemical industries to mix different gases into one gas stream because of the best anti corrosive features of Duplex Stainless Steel metals..

Duplex Stainless Steel Non Return Valves

Contact to Duplex steel Non Return Valves Manufacturers

Duplex steel NRV valves are two-port valves, means that these valves have two openings in the body, one for fluid to enter and the other for fluid to out flow. There are various types of Non Return Valves in Duplex Stainless Steel being used in a wide variety of applications. Although these Duplex Steel NRV valves are available in a wide range of sizes and costs, are very small, simple, or less expensive while comparing to Stainless Steel or Nickel Alloys valves. DSS Non Return valves are designed to work automatically and most are not controlled by a human being or even any external control; accordingly, most of these valves do not have any handle or stem to operate manually. The body (external shells) of most check valves ( Non Return Valves) are made of well tested best duplex steel metal.

An important concept in Duplex Steel Non Return valves is the cracking pressure which is the minimum upstream pressure at which the valve is going to operate. Typically the duplex stainless steel NRV valves are designed for and can therefore be specified for a specific cracking pressure.

 

Types of Duplex Steel Non Return Valves

We can distinguish Duplex Stainless Steel Non Return Valves in to many types as per the design and functionality of these Duplex steel valves

 

Duplex stainless steel Ball Non Return valve

 

Duplex stainless steel Ball Non Return valve Size Range from 25 NB to 350 NB in Class 1550 and 300.

 

Duplex stainless steel Diaphragm non return valve

 

Duplex stainless steel Diaphragm non return valveDuplex stainless steel Diaphragm Non Return Valve are also known by another couple of names like one-way valve, the non return valve and the clack valve. DSS Diaphragm non return valves are simple in construction and their operation is also very simple. They allow the fluid, water, oil or sludge and in many cases, gas, to pass in one direction through the operation of the valves which may be in the form of ball or diaphragm.

 

 

Duplex stainless steel Swing non return valve or tilting disc non return valve

 

Duplex stainless steel Swing non return valve or tilting disc non return valveSwing Type Check Valve [Non Return Valve]
Bolted Cover, Suitable for Horizontal & Vertical Line
Design Standard: BS 1868
Size Range - 1" to 12"
Pressure Rating - 125# / 150# / 300#
End Connection : Flanged End

 

Duplex stainless steel stop-non return valve

 

Duplex stainless steel stop-non return valve

We are manufacturing in size range from 2 1/2" NB to 32" NB.

 

 

Duplex stainless steel lift type non return valve

 

Duplex stainless steel lift type non return valveLift Type Check Valve [Non Return Valve]
Bolted Cover, Suitable for Horizontal Line Only
Design Standard: BS 1868 / DIN
Size Range - 1" to 12"
Pressure Rating: PN 6 / PN 10 / PN 16 / PN 25 / PN 40
End Connection : Flanged End

 

 

 

Duplex stainless steel Dual Plate Non Return valve

 

Duplex stainless steel Dual Plate Non Return valve

We are manufacturing Dual Plate type non return valves in size range from 2" NB to 24" NB.

 

 

 

Duplex stainless steel duckbill Non return valve

 

Duplex stainless steel duckbill Non return valve

 

Duplex stainless steel Pneumatic Non Return valve

 

Duplex stainless steel Pneumatic Non Return valve

 

Duplex stainless steel Wafer non return valve

 

Duplex stainless steel Wafer non return valveWafer Type Check Valves (Non Return Valve)
Single Plate Body Design,
Suitable to mount between two flanges.
Design Standard: API 6D
Size Range : 1" to 42"
Pressure Rating : 150# / 300# / PN 10 / PN 16 / PN 25

 

Duplex stainless steel Flanged nozzle non return valve or axial non return valve


Duplex stainless steel Flanged nozzle non return valve or axial non return valve DESGN & Manufacturing according to - API 6D
Size Range 1/2" NB to 60" NB
Pressure Class: #150-2500 to ASME B16.34
PN1.0Mpa-42.0Mpa to DIN2401
Swing & Lug types

 

 

Duplex stainless steel Non Return Valve

Common Features :-

Our Designed, manufacttured and supplied DSS NRV valves have some best features some of them have been listted down

1. DSS NRV valves are efficient in avoiding and minimizing the risk of back flow of gases
2. DSS NRV valves are perfect for handling gases and liquids under pressure of vacuum
3. DSS NRV valves are easy in installation process.
4. DSS NRV valves are costing minimum in maintenance cost.
5. DSS NRV valves are sturdy in construction
6. DSS NRV valves have long serving life spam.

 

Duplex stainless steel Non Return Valve

Advantages :-

1.Duplex Stainless Steel NRV valves contain only about half the nickel concentration of typical austenitic stainless steels valves, they are therefore less expensive and less sensitive to the price of nickel
2.Duplex stainless steel Non Return Valve enjoy very high Mechanical Strength
3. Duplex stainless steel Non Return Valve are high resistance to pitting and crevice corrosion
4. Duplex stainless steel Non Return Valve are good Resistance to stress corrosion cracking in
a chloride environment
5. Duplex stainless steel Non Return Valve are very good resistance to uniform corrosion
6. Duplex stainless steel Non Return Valve are high resistance to stress corrosion and corrosion
resistance
7. Duplex stainless steel Non Return Valve are good resistance to the corrosion cracking
8. Duplex stainless steel Non Return Valve good fatigue resistance
9. Duplex stainless steel Non Return Valve are low thermal expansion and higher heat conductivity
than austenitic steels
10. Duplex stainless steel Non Return Valve high energy absorption

 

Applications of Duplex stainless steel Non Return Valve

Duplex steel Non return valves have exclusive use in industrial appliications because of it's

Pulp and paper industry
Desalination plants
Flue-gas Industry
Cargo tanks and pipe systems in chemical tankers
Seawater systems
Firewalls and blast walls on the offshore platforms

 

 

Duplex Stainless Steel Non Return Valve

Type of End Connection :-

  • Flanged End Raised Face
  • RTJ Flanged End
  • Threaded
  • Socket Weld
  • Screwed Ends
  • Butt Weld

 

 

Duplex Stainless Steel Non Return Valve

Temprature range :-

  • -50°F - +450°F

 

 

Duplex Stainless Steel Non Return Valve Grade Options

These all duplex steel Non Return valves body are manufactured by casting process and other components are manufactured from solid bars..

  • ASTM A8901A/A995 3A CD4MCu Duplex Stainless Steel Non Return Valves
  • ASTM A890/A9951B CD4MCuN Duplex Stainless Steel Non Return Valves
  • ASTM A890/A995 2A CE8MN Duplex Stainless Steel Non Return Valves
  • ASTM A890/A995 4A CD3MN Duplex Stainless Steel Non Return Valves

 

Duplex Stainless Steel Non Return Valve

Size Range :- 1/2" NB to 42" NB

 

Duplex Stainless Steel Non Return Valve

Pressure Range :- 150#, 300#, 600#, 900#, 1500#, 2500#

 

Duplex Stainless Steel Non Return Valve

Design Standard :-

  • As per API 6D
  • As per API 594
  • As per API 602
  • As per ASME B 16.34
  • As per BS 5154
  • As per MSS SP80

Duplex Stainless Steel Non Return Valve

Testing Standard :-

  • As per API 6D
  • As per API 598
  • As per BS EN 12266-1

 

Duplex Stainless Steel Non Return Valve

Face to Face Dimensions :-

  • As per ASME B 16.10

 

Duplex Stainless Steel Non Return Valve

End Connection Dimensional Standard :-

  • Flanged End As per - ASME B 16.5
  • Butt Weld End As per – ASME B 16.25

 

Duplex Stainless Steel Non Return Valve

Pressure – Temperature :-

  • Chart As per ASME B 16.34

Duplex Stainless Steel Non Return Valve Dimensional Specifications

These all duplex steel Non Return valves body are manufactured by casting process and other components are manufactured from solid bars..

  • ASTM A8901A/A995 3A CD4MCu Duplex Stainless Steel Non Return Valves Series ANSI 150
  • ASTM A890/A9951B CD4MCuN Duplex Stainless Steel Non Return Valves Series ANSI 150
  • ASTM A890/A995 2A CE8MN Duplex Stainless Steel Non Return Valves Series ANSI 150
  • ASTM A890/A995 4A CD3MN Duplex Stainless Steel Non Return Valves Series ANSI 150
  • ASTM A8901A/A995 3A CD4MCu Duplex Stainless Steel Non Return Valves Series ANSI 300
  • ASTM A890/A9951B CD4MCuN Duplex Stainless Steel Non Return Valves Series ANSI 300
  • ASTM A890/A995 2A CE8MN Duplex Stainless Steel Non Return Valves Series ANSI 300
  • ASTM A890/A995 4A CD3MN Duplex Stainless Steel Non Return Valves Series ANSI 300
  • ASTM A8901A/A995 3A CD4MCu Duplex Stainless Steel Non Return Valves Series ANSI 600
  • ASTM A890/A9951B CD4MCuN Duplex Stainless Steel Non Return Valves Series ANSI 600
  • ASTM A890/A995 2A CE8MN Duplex Stainless Steel Non Return Valves Series ANSI 600
  • ASTM A890/A995 4A CD3MN Duplex Stainless Steel Non Return Valves Series ANSI 600
  • ASTM A8901A/A995 3A CD4MCu Duplex Stainless Steel Non Return Valves Series ANSI 900
  • ASTM A890/A9951B CD4MCuN Duplex Stainless Steel Non Return Valves Series ANSI 900
  • ASTM A890/A995 2A CE8MN Duplex Stainless Steel Non Return Valves Series ANSI 900
  • ASTM A890/A995 4A CD3MN Duplex Stainless Steel Non Return Valves Series ANSI 900
  • ASTM A8901A/A995 3A CD4MCu Duplex Stainless Steel Non Return Valves Series ANSI 1500
  • ASTM A890/A9951B CD4MCuN Duplex Stainless Steel Non Return Valves Series ANSI 1500
  • ASTM A890/A995 2A CE8MN Duplex Stainless Steel Non Return Valves Series ANSI 1500
  • ASTM A890/A995 4A CD3MN Duplex Stainless Steel Non Return Valves Series ANSI 1500
  • ASTM A8901A/A995 3A CD4MCu Duplex Stainless Steel Non Return Valves Series ANSI 2500
  • ASTM A890/A9951B CD4MCuN Duplex Stainless Steel Non Return Valves Series ANSI 2500
  • ASTM A890/A995 2A CE8MN Duplex Stainless Steel Non Return Valves Series ANSI 2500
  • ASTM A890/A995 4A CD3MN Duplex Stainless Steel Non Return Valves Series ANSI 2500

Duplex Stainless Steel Non Return Valves

Test procedures :-

All our fittings are 100% carefully inspected through series of dedicate testing procedures, including:

  • Material verification of Duplex Stainless Steel Non Return Valves
  • Dimension check such as tolerance, lobing, out-of-roundness, length, straightness of Duplex Stainless Steel Non Return Valves
  • Duplex Stainless Steel Non Return Valves threading roughness inspection
  • Final Mechanical Properties of Duplex Stainless Steel Non Return Valves if required or are suppose to be changed by manufacturing operation.
  • Overall quality inspection (Includes eddy current (non-destructive) electric testing.)

 

Packaging of Duplex Stainless Steel Non Return Valves

All finished Duplex Stainless Steel Non Return Valves are packed to suit the special conditions for international deliveries and can also customized as per customer's specific requirements.

 

Documentation of Duplex Stainless Steel Non Return Valves


Our Duplex Stainless Steel Non Return Valves products are accompanied by certified material test report 3.1 as per DIN EN 10204 / ASTM A1016. Pre material certification can be provided upon request.

 

We are 100 percent confident on our quality of Duplex steel Gate Valves and that is why we are open to accept orders for the same with any third party inspection certifications.
Duplex steel Gate valves with third party inspection  certifications

 

Our Duplex steel Non Return valves are manufactured with state of the art facility and with strict quality check norms and that is why these valves are acceptable across all industrial sectors.

Duplex Steel  Globe valves for Oil & Gas Industries
Oil & Gas
Industries
Duplex Steel Non Return valves for nuclear industries
Nuclear Power
Projects
Duplex Steel Non Return valves for  Nuclear Power  projects
Petroleum Refineries
Duplex Steel  Non Return valves for Hydro Power  projects
Hydro Power
Projects
Duplex Steel Non Return valves for Offshore Industries
Chemical
Industries
Duplex Steel Non Return valves for Pharmaceutical Industries
Pharmaceutical
Industries
Duplex Steel Non Return valves for Pipe Lines
Offshore Industries
Duplex Steel Non Return valves for Marine Industries
Process Industries
Duplex Steel Non Return valves for Process Industries
Pipe Line Projects
 
Marine
Industries

 

Countries where Neev Valves can supply Duplex Steel Non Return Valve

 

Neev Valves Welcomes Distributors for Duplex Steel Non Return Valves